How many parathyroid glands are present on the backside of thyroid glands in humans?

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Solution

Parathyroid glands
On the backside of the thyroid gland, humans have four parathyroid glands.
The parathyroid glands are little pea-sized glands placed behind the butterfly-shaped thyroid gland in the neck
Two parathyroid glands lie behind each 'wing' of the thyroid gland, giving everyone four parathyroid glands.
When there is a calcium deficit in the blood, the hormone parathyroid hormone is released.
Calcitonin is a hormone that is released when the blood calcium level is too high.
The parathyroid gland produces a hormone that regulates the amount of calcium in the blood.

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